2002 C230 AC not blowing cold
Thread Starter
Junior Member
Joined: May 2017
Posts: 17
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2002 Mercedes C230K
2002 C230 AC not blowing cold
My car has been having lot of issues lately, the age seems to be catching up. I have successfully resolved all issues except the AC. Here is a description of the issue.
The AC blows hot. I tried to recharge it using the regular R134a can with a pressure gauge. When connected to the low pressure valve, the gauge needle went beyond red and showed full. No matter what I do, the AC does not take in any Freon from the can.
What must be the issue?
i am going crazy in this heat with the AC blowing hot air.
Please help
The AC blows hot. I tried to recharge it using the regular R134a can with a pressure gauge. When connected to the low pressure valve, the gauge needle went beyond red and showed full. No matter what I do, the AC does not take in any Freon from the can.
What must be the issue?
i am going crazy in this heat with the AC blowing hot air. Please help
Super Member
Joined: Oct 2012
Posts: 538
Likes: 89
From: Hollywood, CA
W209, W124
My car has been having lot of issues lately, the age seems to be catching up. I have successfully resolved all issues except the AC. Here is a description of the issue.
The AC blows hot. I tried to recharge it using the regular R134a can with a pressure gauge. When connected to the low pressure valve, the gauge needle went beyond red and showed full. No matter what I do, the AC does not take in any Freon from the can.
What must be the issue? i am going crazy in this heat with the AC blowing hot air.
Please help
The AC blows hot. I tried to recharge it using the regular R134a can with a pressure gauge. When connected to the low pressure valve, the gauge needle went beyond red and showed full. No matter what I do, the AC does not take in any Freon from the can.
What must be the issue?
i am going crazy in this heat with the AC blowing hot air. Please help
Otherwise pressure equalizes and is higher than can.
Research is key here, worth doing right. Randomly jamming things when you don't know what you're doing can quickly move AC into "needs professional help' land.
Thread Starter
Junior Member
Joined: May 2017
Posts: 17
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2002 Mercedes C230K
I agree with you. Thanks for the heads up. will try to see some other threads related to similar issues.
Thread Starter
Junior Member
Joined: May 2017
Posts: 17
Likes: 1
2002 Mercedes C230K
MBWorld Fanatic!
Joined: May 2017
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C320
These cars don't have an AC clutch so the AC compressor should always be spinning with the engine even when the AC is switched off. The AC pulley is designed to break away from the belt pulley if the AC compressor is seized. Think of it as a fuse which would save your serpentine belt. If the center of the AC pulley is not spinning with the engine that means your AC compressor has failed and needs to be replaced.
Newbie
Joined: Jun 2008
Posts: 5
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From: Columbus, Ohio
2005 C230 Coupe 6sp, Black/Black/BiX
Check the Evaporator Core Temperature Sensor.
I had a similar issue. Basically the temp sensor failed, and was reading that the core was -27 degrees. The computer thought that the evap core had frozen over and applied heat to attempt to melt the ice.
Its a bit awkward to replace, but not expensive.
I had a similar issue. Basically the temp sensor failed, and was reading that the core was -27 degrees. The computer thought that the evap core had frozen over and applied heat to attempt to melt the ice.
Its a bit awkward to replace, but not expensive.
